O.S - Brushless Motor OMA 3805-1200 image

O.S - Brushless Motor OMA 3805-1200

Manufacturer: O.S Engines Product Code: OSMG9505

9505 Brushless Motor OMA 3805-1200


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For .05 size airplanes
Stainless steel prop shaft
Rigid rear mounting design


.05 Brushless Electric Motor with Back plate,
3.5mm Gold Plated Male Plugs attached to leads,
Three 3.5mm Female Plugs with Shrink Wrap, and
Instruction Sheet


20 - 40A Brushless ESC
Slow flyer type electric propeller from 9x6 to 11x7 in size
depending on specific aircraft


Rated Power: 250W
Rated Voltage: 11.1mm
Rated Current: 20A
Maximum Current (5 sec): 30A
No Load Current: 1.1A
Phase Resistance: 65.1 milliohms
Maximum Efficiency: 80%
kV: 1200
Turns: 22
Poles: 14
Shaft Diameter: 0.16" (4mm)
Shaft Length: 0.46" (11.7mm)
Weight: 2.7oz (76g)
Lead Wire Length: 1.96" (50mm)
Lead Wire Gauge: 17AWG
Length of Motor Can: 1.1" (27.5mm)
Diameter of Motor Can: 1.45" (37mm)
Prop Washer Diameter: 0.75" (19mm)
Thickness of Motor Mount: 0.118" (3mm)
Width of Motor Mount: 1.96" (50mm)
Height of Motor Mount: 1.96" (50mm)


Nomenclature is defined as follows:
0MA means 0.S. airplane motor
First two digits are the rotor diameter
Second two digits are the length of the magnets
Last digits indicate the kV of the motor